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1ORQ

X-ray structure of a voltage-dependent potassium channel in complex with an Fab

Functional Information from GO Data
ChainGOidnamespacecontents
A0002250biological_processadaptive immune response
A0005576cellular_componentextracellular region
A0005886cellular_componentplasma membrane
A0030183biological_processB cell differentiation
A0042105cellular_componentalpha-beta T cell receptor complex
A0071735cellular_componentIgG immunoglobulin complex
C0005216molecular_functionmonoatomic ion channel activity
C0005249molecular_functionvoltage-gated potassium channel activity
C0006811biological_processmonoatomic ion transport
C0006813biological_processpotassium ion transport
C0008076cellular_componentvoltage-gated potassium channel complex
C0016020cellular_componentmembrane
C0055085biological_processtransmembrane transport
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE K C 1
ChainResidue
CK2
CK2
CK2
CK2
CTYR199
CTYR199
CTYR199
CTYR199

site_idAC2
Number of Residues16
DetailsBINDING SITE FOR RESIDUE K C 2
ChainResidue
CK1
CK1
CK1
CK3
CK3
CK3
CK3
CVAL197
CVAL197
CVAL197
CVAL197
CGLY198
CGLY198
CGLY198
CGLY198
CK1

site_idAC3
Number of Residues16
DetailsBINDING SITE FOR RESIDUE K C 3
ChainResidue
CK2
CK2
CK2
CK2
CK4
CK4
CK4
CK4
CTHR196
CTHR196
CTHR196
CTHR196
CVAL197
CVAL197
CVAL197
CVAL197

site_idAC4
Number of Residues8
DetailsBINDING SITE FOR RESIDUE K C 4
ChainResidue
CK3
CK3
CK3
CK3
CTHR196
CTHR196
CTHR196
CTHR196

site_idAC5
Number of Residues2
DetailsBINDING SITE FOR RESIDUE CD C 7
ChainResidue
CSER182
CASP185

site_idAC6
Number of Residues1
DetailsBINDING SITE FOR RESIDUE CD C 8
ChainResidue
CCYS46

site_idAC7
Number of Residues2
DetailsBINDING SITE FOR RESIDUE CD C 9
ChainResidue
CPRO95
CARG133

site_idAC8
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CD A 216
ChainResidue
AARG62
AARG62
AGLU82
AGLU82

site_idAC9
Number of Residues1
DetailsBINDING SITE FOR RESIDUE CD A 217
ChainResidue
AASP168

site_idBC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CD B 220
ChainResidue
AASP152
AHIS190
BASP178

site_idBC2
Number of Residues1
DetailsBINDING SITE FOR RESIDUE CD A 218
ChainResidue
AGLU17

Functional Information from PROSITE/UniProt
site_idPS00290
Number of Residues7
DetailsIG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YTCEATH
ChainResidueDetails
ATYR193-HIS199

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues97
DetailsDomain: {"description":"Ig-like","evidences":[{"source":"PROSITE-ProRule","id":"PRU00114","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues92
DetailsDomain: {"description":"Ig-like 1"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues24
DetailsTransmembrane: {"description":"Helical; Name=Segment S1"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues27
DetailsTopological domain: {"description":"Extracellular","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues24
DetailsTransmembrane: {"description":"Helical; Name=Segment S2"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues18
DetailsTopological domain: {"description":"Cytoplasmic"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues8
DetailsIntramembrane: {"description":"Helical; Name=Segment S3A"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues16
DetailsTransmembrane: {"description":"Helical; Voltage-sensor; Name=Segment S3B"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues16
DetailsTransmembrane: {"description":"Helical; Voltage-sensor; Name=Segment S4"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues24
DetailsTransmembrane: {"description":"Helical; Name=Segment S5"}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues12
DetailsIntramembrane: {"description":"Pore-forming","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues31
DetailsTransmembrane: {"description":"Helical; Name=Segment S6"}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues5
DetailsMotif: {"description":"Selectivity filter"}
ChainResidueDetails

243531

PDB entries from 2025-10-22

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